Car Stamp Duty WA Calculator:
Calculate Vehicle Duty in Western Australia
Buying a car in Western Australia costs more than the price on the windscreen. When a vehicle licence is granted or transferred into your name, the State charges vehicle licence duty, which most buyers simply call car stamp duty. This car stamp duty WA calculator estimates that charge from the dutiable value you enter, so you can budget before you commit. Below you’ll find the current rates, the sums behind every result, worked examples and the situations where only an official assessment will do.
Rates and rules on this page were checked against WA Government sources on 26 October 2026. Results are estimates, not official assessments.
Car Stamp Duty WA Calculator
Estimate the vehicle licence duty (stamp duty) you pay when you license or transfer a car in Western Australia. Results update as you type, and nothing you enter leaves your browser.
Estimated vehicle licence duty
$0.00
- Dutiable value used
- Rate applied
- Duty
- Transfer fee (separate)
- Estimated combined total
Estimate only. This calculator does not apply exemptions, concessions (for example spouse or de facto transfers, deceased estates, classic cars, pensioner concessions or specialised equipment) or an official valuation. The Department of Transport and RevenueWA make the final assessment. Rates last checked 26 October 2026.
How WA vehicle licence duty is calculated
Western Australia charges vehicle licence duty when a licence is granted or transferred. The rate applies to the whole dutiable value, not just the amount above a threshold.
- Light vehicles (4.5 t or less), up to $25,000: 2.75%.
- $25,000 to $50,000: R% where R = 2.75 + ((value − 25,000) ÷ 6,666.66), rounded to two decimals.
- Over $50,000: 6.5%.
- Heavy vehicles (over 4.5 t): 3%, capped at $12,000.
This calculator rounds duty down to the nearest five cents. The official pages do not state that rule, so treat the last few cents as approximate.
| Dutiable value | Rate | Duty |
|---|---|---|
| $20,000 | 2.75% | $550.00 |
| $25,000 | 2.75% | $687.50 |
| $30,000 | 3.50% | $1,050.00 |
| $35,000 | 4.25% | $1,487.50 |
| $40,000 | 5.00% | $2,000.00 |
| $50,000 | 6.50% | $3,250.00 |
| $60,000 | 6.50% | $3,900.00 |
What counts as the dutiable value?
New cars
The manufacturer’s retail price in WA, including optional factory features and any manufacturer delivery or order fee. Dealer delivery charges, registration, insurance and finance costs are not included.
Used car stamp duty in WA
The amount the car could reasonably sell for on the open market. If you paid more than that, this calculator uses the higher figure. The Commissioner can reassess and may ask for a valuation, so declare an honest value.
Car transfer fee in WA
The Department of Transport charges a separate vehicle transfer fee of $20.50. It is shown on its own line above, and you can leave it out of the combined total.
What duty does not cover
Vehicle licence duty is different from property stamp duty, your annual registration (rego) charges, motor injury insurance and dealer fees. Check these separately.
Official sources
How the Car Stamp Duty WA Calculator Works
Three quick steps from your vehicle’s value to an indicative duty estimate.
Enter the Vehicle Value
Type in the dutiable value of the car in Australian dollars, including GST. Don’t deduct your trade-in.
Review Your Estimate
See the estimated Western Australia vehicle licence duty and the rate applied, based on the value you entered.
Confirm and Plan
Add the transfer fee, licence fee and motor injury insurance to your budget, and check unusual cases with the Department of Transport or RevenueWA.
Costs to Consider When Buying a Car in WA
Duty is only one line on the bill. Keep it separate from these costs:
| Cost | What it is | What to know |
|---|---|---|
| Vehicle licence duty | State charge on the dutiable value | Covered above and paid at transfer. |
| Vehicle transfer fee | Administration fee to move the licence into your name | $20.50 on the Department of Transport's current schedule. |
| Licence (registration) fee | Charged by vehicle type and weight | $29.76 per 100 kg for a motor car in 2026/27; the department's example for a 1,650 kg car over 12 months is $512.52. |
| Motor injury insurance | Required insurance paid alongside your licence fee | Amounts are on the motor injury insurance page . |
| Dealer delivery, finance, warranty | Commercial charges | Not part of duty on a new vehicle. |
Cover for damage to your own car or to other people's property is a separate product from the injury insurance paid with registration. If you're pricing it, our car insurance calculator and guide to how much car insurance costs can help you plan.
What Is Car Stamp Duty in WA?
Car stamp duty is the everyday name for vehicle licence duty, a charge that is payable when a vehicle is licensed or a current licence is transferred. The Department of Transport collects it under the Duties Act 2008, and the purchaser is the person liable for it.
Who handles the paperwork depends on how you buy. When you buy from a dealer, the dealer completes the licence transfer and you pay the transfer fee and duty. In a private sale, you notify the Department of Transport within 14 days and receive an invoice for the transfer fee and duty once your form is processed.
Vehicle licence duty is separate from the transfer duty paid on property, with its own rates and rules. A WA stamp duty calculator built for homes will therefore give the wrong answer for a car.
WA Car Stamp Duty Rates
The rate depends on the vehicle’s weight class and its dutiable value. The official rates for vehicles with a gross mass of 4.5 tonnes or less are:
Dutiable value | Rate applied to the whole dutiable value |
|---|---|
Up to $25,000 | 2.75% |
$25,000 to $50,000 | R%, where R = 2.75 + ((value − 25,000) ÷ 6,666.66), rounded to two decimal places |
Over $50,000 | 6.5% |
For heavy vehicles (over 4.5 tonnes), duty is 3% of the dutiable value, capped at $12,000. The cap is reached at a dutiable value of $400,000.
Two features of this structure catch buyers out. First, the rate applies to the entire value, not to slices of it as income tax does. A $55,000 car pays 6.5% on all $55,000. Second, the middle band slides: every extra $1,000 of value adds about 0.15 percentage points to the rate. Duty therefore climbs faster than price. A $40,000 car attracts $2,000 in duty, more than three and a half times the $550 on a $20,000 car.
There’s no cliff at $50,000: the sliding formula lands on exactly 6.5% there.
How Is Car Stamp Duty Calculated in WA?
Three separate ideas sit inside every duty estimate, and mixing them up is the most common reason for a wrong figure:
- Dutiable value: the amount duty is charged on. It is not always the price on your contract.
- Rate: the percentage that applies to that value, set by its band and the vehicle’s weight class.
- Duty: the dutiable value multiplied by the rate.
For a standard car, the rate comes from the value itself, so the dutiable value is the only number you need. At $25,000 or less, use 2.75%. Above $50,000, use 6.5%. In between, work out R with the formula, round it to two decimal places as the official table specifies, then multiply.
A calculator automates those steps. Whichever stamp duty calculator you use for a WA car, the result may differ from the official figure by a small rounding amount, and no tool can tell whether a valuation issue or an exemption applies to you. That is why RevenueWA’s official vehicle duty calculator remains the reference before you rely on a number.
How to Calculate Stamp Duty on a Car in WA
To work out your own estimate by hand, take a light vehicle with a dutiable value of $38,000:
- Find the amount above $25,000: $38,000 − $25,000 = $13,000.
- Divide by 6,666.66: $13,000 ÷ 6,666.66 ≈ 1.95.
- Add 2.75: R = 2.75 + 1.95 = 4.70%.
- Multiply by the dutiable value: $38,000 × 4.70% = $1,786.00.
There’s a shortcut for the middle band. Count the thousands above $25,000, multiply by 0.15 and add the result to 2.75. Here that’s 13 × 0.15 = 1.95, giving the same 4.70%.
Rounding can shift the answer by a few dollars. At $32,500, the unrounded rate is 3.875001%, which rounds to 3.88%. Duty is then $1,261.00 rather than the $1,259.38 you’d get at exactly 3.875%.
Small differences matter in this band. Duty on $40,000 is $2,000, but on $39,000 it is $1,891.50, a $108.50 gap per $1,000. Establish the dutiable value carefully, and never understate it, because penalties apply.
New Car vs Used Car Stamp Duty in WA
The rates are identical for new and used cars. What differs is how the dutiable value is found, according to Treasury and Finance guidance.
New vehicles. The dutiable value is the retail selling price in Western Australia set by the manufacturer, including optional features such as a transmission type or engine size. A delivery or order fee built into the manufacturer’s fixed price counts, including on electric vehicles. Charges a third party such as a dealer adds on top don’t count. Registration fees, insurance premiums, extended warranties and finance charges are also outside it, as are accessories the manufacturer doesn’t specify, such as window tinting, sound systems or spoilers.
Promotions need care. Duty is assessed on the retail selling price when the licence is granted. A fixed promotional or drive-away price can be accepted if it was properly advertised, but if the promotion ends before licensing, the non-promotional recommended retail price applies. A demonstrator must be used for more than two months before it can be treated as used, while a static showroom display remains a new vehicle.
Used vehicles. The dutiable value is the amount the vehicle might reasonably sell for in the open market, free of encumbrances. As the buyer, you estimate it on the transfer form, and Redbook serves as a general guide. The agreed price isn’t automatically the answer: the Commissioner’s own examples show a gifted car assessed at a Redbook-based market value. RevenueWA can reassess if a declared figure looks understated, and understating the price or value can bring penalty tax of up to 100% of the duty shortfall.
Light commercial and heavy vehicles. The dutiable value is the open-market value, or the selling price if that is higher.
Frequently Asked Questions About Car Stamp Duty WA
It depends on the dutiable value. A light vehicle pays 2.75% up to $25,000, a sliding rate up to $50,000 and 6.5% above that. A $30,000 car pays $1,050 and a $60,000 car pays $3,900.
Find the dutiable value, work out the rate and multiply. In the middle band, the rate is 2.75% plus 0.15 percentage points for each $1,000 above $25,000, rounded to two decimal places.
The rates are the same. The difference is the dutiable value: the manufacturer’s WA retail price for a new car and the open-market value for a used one.
The amount it might reasonably sell for in the open market, free of encumbrances. You estimate it on the transfer form, and Redbook is a general guide.
Yes. Duty is based on value, while the licence fee is charged by vehicle type and weight. Motor injury insurance and a transfer fee are further separate charges.
Yes. Vehicles over 4.5 tonnes pay 3% of dutiable value, capped at $12,000.
Sometimes. Exemptions and nominal duty apply to specific situations, such as certain spouse transfers and deceased estates. If you think the dutiable value is too high, you can object within 60 days.
Yes. The official rate structure has no separate electric-vehicle rate, so the standard bands apply. A manufacturer’s delivery or order fee built into an electric vehicle’s fixed price forms part of its dutiable value.
Use RevenueWA’s vehicle duty calculator, linked from the Department of Transport’s duty calculator page, and check the invoice issued after your transfer is processed. For a reassessment, contact RevenueWA.
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